The opposite side of the world from Nanjing (NKG)
Nanjing Lukou International Airport — 31.74°N, 118.87°E
Exact antipodal point
31.74°S, 61.13°W
Nearest airport to that point
Santa Fe, Argentina SFN
Sauce Viejo Airport
This is a genuinely close pairing — the airport sits just 31 km from the exact antipodal point.
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Of the maximum possible
99.8%
No two points on Earth can be more than about 20,015 km apart.
The antipode is found by negating the latitude and shifting the longitude by 180°. Distances use the haversine formula on a sphere of mean radius 6,371.0088 km. Airport coordinates come from the public-domain OurAirports dataset.